CATERPILLAR CAT EP15KRT FORKLIFT LIFT TRUCKS CHASSIS, MAST AND OPTIONS Service Repair Manual SNETB10

Page 1

Service Manual Chassis, Mast & Options EP10KRT EP12KRT EP15KRT

ETB10-00011-up ETB10-20001-up ETB10-50001-up

99759-65110


GROUP INDEX GROUP INDEX

Items involved

GENERAL INFORMATION

Serial Number Locations, Dimensions, Technical Data

1

VEHICLE ELECTRICAL COMPONENTS

Console Box, Key Switch, Lamp Specification Chart

2

MAIN CONTROLLER

Outline, Controller Components, Logic Card Components, Controller Models, Operation Outline, Drive System, Hydraulic System, Fail-safe System, Malfunction Detection, Malfunction Data Record, Setting, Self-diagnosis, etc.

3

TROUBLESHOOTING FOR CONTROL CIRCUITS

Faulty Central Vehicle Monitor System, Faulty Diagnosis Indication, or Other Abnormalities

4

MOTORS

Motor Installation Positions, Specifications, Structures, Tightening of High-power Cable Terminals, Inspection of Brushes for Wear and Brush Replacement, Procedures and Key Points for Removal and Installation, etc.

5

FRONT AXLE

Structure and Functions, Disassembly and Reassembly of Front Axle Assembly, Service Data

6

REAR AXLE

Rear Axle, Rear Wheels, Removal and Installation, Disassembly and Reassembly, Adjustment, Troubleshooting, Service Data

7

BRAKE SYSTEM

Specifications, Structure and Functions, Procedures and Key Points for Disassembly and Reassembly, Inspection and Adjustment, Troubleshooting, Service Data

8

STEERING SYSTEM

Specifications, Structure and Functions, Procedures and Key Points for Removal and Installation, Steering Control Valve, Hydraulic Circuit, Troubleshooting, Service Data

9

HYDRAULIC SYSTEM

Tank, Pump, Control Valve, Lift and Tilt Cylinders, Flow Regulator Valve, Down Safety Valve

10

MASTS AND FORKS

Simplex Mast, Duplex Mast, Triplex Mast

11

SERVICE DATA

Inspection Standards, Periodic Replacement of Parts, Lubrication Standards, Main Component Weights, Tightening Torque for Standard Bolts and Nuts, Special Tools

12

OPTIONS

Amber Strobe Kit, Back Buzzer Kit, Working Lamp Kit, Tire Kit

13


GENERAL INFORMATION 1 Vehicle Exterior ....................................................................................... Models ....................................................................................................... Serial Number Locations ...................................................................... Chassis and Mast Model Identification ............................................ Dimensions .............................................................................................. Technical Data .........................................................................................

1–1 1–1 1–2 1–3 1–4 1–5


GENERAL INFORMATION

Vehicle Exterior

103378

Models This manual applies to EP10KRT, EP12KRT and EP15KRT.

Truck Model

Serial Number

EP10KRT

ETB10-00011-up

EP12KRT

ETB10-20001-up

EP15KRT

ETB10-50001-up

1-1


GENERAL INFORMATION

Serial Number Locations

Mast number

Chassis number

Nameplate

209010

1-2


GENERAL INFORMATION

Chassis and Mast Model Identification

[Chassis] EP

10

KRT

Generation designator and truck type

Rated capacity 10: 1000 kg 12: 1250 kg 15: 1500 kg Battery type GP: gasoline engine DP: diesel engine [Mast] 2

G

15

CA

33

Maximum lifting height “33” stands for 3300 mm Order of the minor change (“CA” for the original, “CB” for the first change, “CC” for the second change, and so on) Applicable truck model designation 15: 1.0 ton class

Kind of mast G: simplex mast H: duplex mast J: triplex mast Major change (“2” for the original, “3” for the first change, and so on up to “9”)

1-3


GENERAL INFORMATION

Dimensions

209011

1-4


GENERAL INFORMATION

Technical Data Truck model

EP10KRT

EP12KRT

EP15KRT

Mast tilt, forward/backward

A (deg)

5/7

5/7

5/7

Height with mast lowered

B (mm)

2110

2110

2110

Standard free lift

C (mm)

120

120

120

Standard lift height

D (mm)

3300

3300

3300

3895

3895

3895

Overall height with mast raised (without backrest) E (mm) Overall length

F (mm)

2500

2500

2575

Length to fork face (includes fork thickness)

G (mm)

1700

1700

1775

Overall width

H (mm)

997

997

997

Forks dimensions (thickness × width × length)

I (mm)

35 × 80 × 800

35 × 80 × 800

35 × 80 × 800

Turning circle radius

J (mm)

1370

1370

1445

Fork carriage width

K (mm)

920

920

920

Ground clearance under mast, with load

L (mm)

80

80

80

100

100

100

Ground clearance center of wheelbase, with load M (mm) Travel speed, with/without load

km/h

11.5/13.5

11.2/13

11/12.5

Lifting speed, with/without load

m/s

0.29/0.48

0.27/0.48

0.26/0.48

Lowering speed, with/without load

m/s

0.52/0.50

0.52/0.50

0.52/0.50

1569/1667

1520/1669

1470/1670

4217/4315

4168/4315

4119/4314

Rated drawbar pull, with/without load (60 min. short duty)

N

Maximum drawbar pull, with/without load (5 min. short duty)

N

Gradeability, with/without load

%

5.5/8

4.5/7.5

3.5/6.5

Maximum gradeability, with/without load

%

13/20

11/18

10/16

Battery to DIN 43531/35/36A/B/C/No. Battery voltage/capacity at 5-hour discharge

DIN43535A V/Ah

Battery weight

kg

Truck weight, without load/including battery (Maximum battery)

kg

24/600, 720

24/600, 720

24/720, 840

445, 540

445, 540

540, 620

2333

2568

2778

Drive motor capacity (60 min. short duty)

kW

4.8

4.8

4.8

Pump motor output @15 % duty factor

kW

8.8

8.8

8.8

Drive motor control method

Mosfet-chopper

Pump motor control method

Chopper

1-5


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VEHICLE ELECTRICAL COMPONENTS Console Box ............................................................................................. 2 – 1 Functions of Vehicle Monitor System ........................................................ 2 – 1 Electrical Components .............................................................................. 2 – 3 Disassembly and Reassembly .................................................................. 2 – 4

Direction Lever ........................................................................................ Accelerator Control ............................................................................... Key Switch ............................................................................................... Lighting Switch ....................................................................................... Fuses ......................................................................................................... Lamp Specification Chart .................................................................... Electrical System Diagram (Type: Chopper) ................................... Electrical Schematic (Type: Chopper) .............................................. Electrical Schematic (Type: Chopper) ..............................................

2– 5 2– 6 2– 7 2– 7 2– 8 2– 8 2– 9 2 – 11 2 – 13

2


VEHICLE ELECTRICAL COMPONENTS

Console Box 1 2 3 4

Vehicle monitoring system (VMS) Steering tilt knob Key switch Lighting switch

103380

Functions of Vehicle Monitor System (VMS)

209140C

Operations

No.

Monitor name

1

Service indicator

2

Worn motor brush Drive motor and pump motor Worn brushes lamp brushes in operable condition

After brushes are replaced, lamp turns OFF.

3

Service indicator Controller, drive motors and Overheat pump motor in normal temperature

Error code is indicated on display 8 when overheating condition has occurred.

4

Remaining battery charge warning lamp

5

Brake fluid level lamp

6

Parking lamp

When OFF

When ON or flashing

Remarks

Wrench-symbol warning lamp turns on when error has occurred.

Normal battery condition

Red LED turns on. Drive 1: Lifting function operates in restricted mode. Normal fluid level

Parking brake disengaged

Parking brake engaged 2-1

Low fluid level


VEHICLE ELECTRICAL COMPONENTS

No. 7

Monitor name

When OFF

Malfunction lamp Normal

Vehicle malfunction

Any of four green LEDs turns on when corresponding battery is discharged.

Battery discharge indicator (BDI)

9

10

Hourmeter time display

11

Truck mode indicator

Remarks

Error code is displayed as follows when an error is present. A L × × ×

Error indicator

8

When ON or flashing

Power mode (Mode B)

Economy mode (Mode A)

Error indicator

Indication

Condition

A L 0

7

9

ON

Key switch turned [ON] with direction lever in [F] or [R] position

A L 0

6

5

ON

Drive motor overheated

A L 0

1

7

ON

Pump motor overheated

A L 0

6

2

ON

Traction controller overheated

A L 0

0

6

ON

Data communication error

A L 0

3

5

ON

Pump motor overcurrent

A L 0

6

4

ON

Hydraulic controller overheated

A L 0

7

2

ON

Drive motor stall timer

A L 0

7

9

ON

Faulty setting of tilt lever

A L 0

7

9

ON

Faulty setting of attachment lever 1

A L 0

7

9

ON

Faulty setting of attachment lever 2

A L 0

3

2

ON

Regeneration diode error

A L 0

3

2

ON

Drive motor armature diode error

A L 0

2

8

ON

Pump motor armature diode error

A L 0

6

9

ON

Drive motor armature overcurrent

A L 0

5

7

ON

Drive motor field overcurrent 2-2


VEHICLE ELECTRICAL COMPONENTS

Electrical Components

209141

1 2 3 4

Key switch Display Horn Controller

5 6 7 8

2-3

Contactor Fuse holder Plate Rivet


VEHICLE ELECTRICAL COMPONENTS

Disassembly and Reassembly Disassembly

209142

Sequence 1 2

Console box (front panel) Forward/reverse lever

3 4

Console box (rear panel) Steering column assembly

Disassembly procedure (1) Remove the rear panel and front panel from the steering column assembly. (2) Disconnect the harness connector at the direction lever. (3) Disconnect the harness connector at the horn. (4) Remove the steering tilt knob from the rear panel of the console box. (5) Remove the steering column assembly. 209143

Reassembly Follow the disassembly procedure in reverse.

2-4


VEHICLE ELECTRICAL COMPONENTS

Direction Lever Structure

209144

1 2 3

Knob Lever Harness

4 5

2-5

Connector Screw, Spring washer


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